.clr {clear: both;}
.main-page-block { 
    background-color: #e4e4e4;
    -moz-border-radius: 5px;
    border-radius: 5px;
    padding: 10px; 
    margin: 10px 0;
}
.second-pagea-block {
    width: 100%;
    padding: 0; 
    margin: 10px 0;
}